多次点击分页时，jQuery Data表对服务器端的请求非常慢

Question

我在我的网站中使用了jQuery DataTable，显示了我们客户的所有法律列表，我目前正在使用jQuery DataTable插件进行分页，搜索和排序。它工作正常除了一个问题，当我多次点击分页时数据加载非常慢。我真的不确定是什么问题。

干杯！提前谢谢！

我的网站：http://law.darwinkh.org/en/legal-database

这是我的代码

if($('#legal-database').length) {
    var tableLaw = jQuery('#legal-database').dataTable({
        "processing": true,
        "serverSide": true,
        "oLanguage": {
            "sSearch": "Search",
            "sProcessing": "Processing...",
            "sLoadingRecords": "Processing...",
            "sLengthMenu": "Show _MENU_ entries",
            "sInfo": "Showing _START_ to _END_ of _TOTAL_ entries",
            "sInfoEmpty": "Showing 0 to 0 of 0 entries",
            "sEmptyTable": "No data available in table",
            "oPaginate": {
                "sFirst": "First",
                "sLast":  "Last",
                "sNext":  "Next",
                "sPrevious": "Previous"
            }
        },
      "ajax": {
        "url": "http://law.darwinkh.org/en/legal-database/law-grid-data",
            "type": "POST",
            "data": {
                catid: 0 },
            "cache": false
    },
        "columns": [
            { "data": "id" },
            { "data": "title" },
            { "data": "year" },
            { "data": "type" },
            { "data": "slug" }
        ],
        "order": [[ 0, "desc" ]],
        initComplete: function () {

        }
    });
}